Yes, for me I find it a waste of time. That's a personal choice. I read comic books if I have extra time, which I enjoy. And just to be clear, I loved the book Frankenstein and it had a profound effect on my life. I just never had any incentive after that to read another fiction book.
Okay, I'm not trying to change your mind... just humour me. I'm selfishly curious, and that's all: if you haven't done it in 25 years and you were only a decade into your conscious adulthood, does it not seem even slightly possible that ruling out all contempory fiction of every genre based on a 200 year old monster allegory means it's time for a check-in? I just don't understand how you can be on this forum and also hold such a strong belief that you have anywhere near enough information to make up your mind as a fifty year old.